How to Hide the Minimized Area

To hide the minimize area you can use the MinimizedAreaVisibility property and set its value to Collapsed.

XAML

	<telerik:RadOutlookBar x:Name="RadOutlookBar1" MinimizedAreaVisibility="Collapsed">
	    <telerik:RadOutlookBarItem Header="Item 1">
	        <TextBlock Text="Item 1 Content" />
	    </telerik:RadOutlookBarItem>
	    <telerik:RadOutlookBarItem Header="Item 2">
	        <TextBlock Text="Item 2 Content" />
	    </telerik:RadOutlookBarItem>
	    <telerik:RadOutlookBarItem Header="Item 3">
	        <TextBlock Text="Item 3 Content" />
	    </telerik:RadOutlookBarItem>
	</telerik:RadOutlookBar>